ARRL Propagation Bulletin ARLP038 (1996)

SB PROP @ ARL $ARLP038
ARLP038 Propagation de KT7H
ZCZC AP58
QST de W1AW
Propagation Forecast Bulletin 38 ARLP038
From Tad Cook, KT7H
Seattle, WA September 13, 1996
To all radio amateurs
SB PROP ARL ARLP038
ARLP038 Propagation de KT7H
Solar activity was down last week, with the sunspot numbers below
the 90 day average of 71 on every day. Solar flux was down an
average of over 4 and sunspot numbers down an average of 11
compared to the week previous. September 10 was a disturbed day,
with an A index of 25 and the K index as high as 5 over several
periods.
Look for solar flux to peak around the mid-seventies from September
23 to 25. Disturbed or stormy conditions are forecast around
September 26. Current unsettled geomagnetic conditions are
expected to quiet down from September 14 to 20.
Sunspot Numbers for September 5 through 11 were 0, 0, 15, 15, 0, 0
and 0, with a mean of 4.3. 10.7 cm flux was 70.3, 69.7, 69.5,
68.2, 67.9, 68, and 67.6, with a mean of 68.7.
NNNN
/EX